I have a Flex Spark List (well it's a Tree to be precise but it renders as a list) and as I'm scrolling through it I want to provide information about the item that is currently at the top of the list in context to the viewport. So this could be the 100th item in the list depending on how far you've scrolled down.
View 1 RepliesHow do I wordwrap in a spark list w/ an itemrenderer? This posting at[URL] works 100% but when I try to set a separate item renderer, I can't get the word wrapping...instead, I get an ugly horizontal scroll bar. HEre is my mxml:
[Code].....
I'm creating a mobile app in which I need to show a calendar with months at the top. The months are part of a component that extends from SkinnableDataContainer (and has some custom scrolling/behaviour - which is why I did'nt use a spark list). I need the months to be shown as a 'trapezium' shaped tab and so I'm using a png image as a mask in the item renderer for the component.
When the mask is not applied, it all works well - the months render, the list/data container selection works when I click on a month and so on.When the mask is applied, it renders well, scrolling and everything else seems to work well - but when I click on a month, nothing happens visually. And from the trace statements in my code, it appears list item selection is not changing. Looks like mouse clicks are not working.
Code:
public class TopCalendarMonthRenderer extends LabelItemRenderer {
[Embed(source="/assets/trapezium_alpha.png")]
private static var TrapeziumMask:Class;
private static var trapeziumMaskInstance:BitmapAsset;
[code]...
I have a Spark list with a customItemRenderer that is taking a good 3 seconds to initialize with just 50 items.
I'm using Flex 4.5, my ItemRenderer is already very optimized, using as little nesting as possible, fxg and so on.
Is anyone having similar issues? I've tried almost everything in the book bar going back to mx.
I have a List and the item renderer displays an image. Whenever you scroll the list, and the item renderer refreshes, it redownloads the image. Causing there to always be a delay. Is there some way of caching it so it doesn't have to redownload every time causing a delay in showing the image every time you scroll the list?
View 3 RepliesI have found something good here. [URL]..The mouseover effect on the list item is good. Any ideas to make this look.. I can infer that this is happening on mouseover of the Image Component. I think this is similar to google image search preview of images. If anyone have come across a component similar to this kindly share it to me and to all.
View 1 RepliesWe have a requirement to show a list of appointment slots. So every hour of a schedule has a set of 10 min slots. The requirement is that if we click on a arrow button at the 8:00, 9:00 hour slot, the layout of the hour slots should change from a vertical list to a horizontal list.For this we modeled the system as follows:ScheduleComponent ->(contains) -> List (Hours of schedule)The HourViewComponent is an Item Renderer, that displays the 10 mins slots based on the available appointments by using a Slots List (list of slots in the 8:00 hour). For the Slots List we have a Slot View Component as an Item Renderer.Now the issue is that when we click on the 8:00 slot we are able to change the HourViewSlot from a VerticalState to a Horizontal state. But The container height is not collapsing in the minimized state. It occupies the same size as the vertical layout! We tried using variableRowHeight attribute.
View 1 RepliesI am using a List with an ArrayCollection as a DataProvider. The list uses ComboBox as Item Renderer itemRenderer="mx.controls.CheckBox"I would like to bind the values in the List.You have a list with several comboboxes, and those values are loaded dynamically from an ArrayCollection.The ArrayCollection contains Objects with a boolean property for which I should bind the True/False values selected in the comboboxes.
View 2 RepliesI'm trying to create a list with icons. There're a lot of examples but seems all of them are using embedded images.My problem is how can I create the list with icon from base64 png string at runtime?
View 1 RepliesI have two spark lists and want to drag items from one list to the other. When im dragging an item and over the other list item, i want the target item to change the background coloer.Basically instead of showing the black line indicating that I will drop between elements, I want to see the target item highlight.
View 1 RepliesI'm trying to make a simple flash application providing interface for taking tests as a high school assignment. One of the requirements is to use an XML file as data source.Now, having a List component bound to the XML file with questions consisting of data such as question body, question type (ie. single choice, multiple choice, open, image etc.) and possible answers (where applicable), I was wondering if I could add some additional data (and what is the best possible way to do so) to each question upon its transfer to the List component.
I am trying to achieve two main goals with this: firstly, to mark the questions to which an answer has already been given, like with such code in ItemRenderer class:
<s:Label color="{data.color}" text="{data.label}"/>
Where data.color would be set whenever the user gives an answer to a question.
Secondly, while at it, I thought of such possibility as a great way to store answers given to particular questions. In this case, the Class of the answer object would have been Object, since there has to be many type of questions (where the answer could also be a Bitmap for example).
I have a list with custom item renderers. What I would like is when one of the list items is selected to position another control OUTSIDE the list to the same vertical position as the selected item.
View 2 RepliesI have a regular spark list which is sorted correctly when no item renderer is used. However, when the following item renderer is used, the list shuffles and displays items from previous instances of the list.[code]
View 2 RepliesI'm setting selected element in s:List component with Actionscript, it works, but List doesn't scroll to selected item -- need to scroll with scrollbar or mouse. Is it possible to auto-scroll to selected item
View 8 RepliesI have a List component using multiple item renderers determined by the itemRendererFunction. When I set the data the first time, it works as expected. Then, when I set the data a second time with new data, it doesn't call the itemRendererFunction and tries to reuse the current renderers even though they don't match the data.Once I scroll, the function is called and the correct renderers are used. I tried calling invalidateDisplayList and such prior to setting the data, but that didn't fix the problem.
View 3 RepliesI have an issue with Spark Lists whereby I am trying to ensure that an item is always selected and ensure that the GUI displays this to the user.
The application (full code below) creates a List, a Label and a Button. The Label states what is selected in the List. The button removes the selected item. Changing the selection, updates the text in the Label. Important: The List has "requireSelection" set to true to ensure that an item is always selected.
If I select the first item in the List, the selection is correctly reflected in the label. Clicking "Remove" removes the item and the next item is selected. This is all working correctly.[code]...
In a spark list I could use the change event to find out which item has been selected or deselected. The dispatched IndexChangeEvent object has the properties newIndex and oldIndex holding this information.
But with multiple selection allowed this doesn't work anymore because newIndex and oldIndex could refer to indices of still selected elements.
A solution would be to copy the selectedIndices vector to another variable and compare this variable with selectedIndices after a change in selection, but this seems to be somewhat complex.
Does anyone know if there is an easy way two get the index/item a user is deselecting while other elements are still selected?
I have a spark List defined as:
<s:List id="symbolList" dataProvider="{symbolListCollection}" change="symbolNameChangeHandler(event)"></s:List>
With the change handler defined like this:
protected function symbolNameChangeHandler(event:IndexChangeEvent):void {
symbolList.validateProperties();
changeSymbolView(symbolList.selectedItem);
}
and symbolListCollection as an ArrayList filled with Strings.
At first, the change event works fine, and I get what I expect.
However, if I Ctrl-click on the selected item, to de-select it, i am unable to ever select an item again.
When I click on something to try to select it, the change event DOES fire, however, the ItemChangeEvent has both oldIndex and newIndex set to -1
I have data ItemRenderers with DataGroup, but I have many items, and it seems to me that DataGroup create all of them not only those few displayed on users screen, which takes time and resources.
View 1 Replies<mx:itemRenderer>
<mx:Component>
<mx:Canvas>
[code]......
I have provided an ArrayCollection to a List, works fine, scroll and sweet.
I am able to access the carretIndex (though not necessarily the ones in view) by
list.caretIndex
Is it possible to access the list of items currently visible in the List.
What I am curious to know, is how can I can access (read) the first (or any of the) item in a given View port of the list.
I change an item in Spark List. The item then moves to a different index in the list since I keep the List's dataProvider sorted. However, the selectedIndex stays where the item used to be. I want the List's selectedIndex to still be on the item that changed.
View 1 RepliesI have a renderer that looks like this:
[Code]...
Loading thumbnails using this method works perfectly. The issue happens when you scroll the List.
I have a Datagroup with a custom item renderer the momment I bind it to XML from an http service it stops working.
[Code]...
I'd like to have an overlay that draws lines between selected items in different Flex 4 List controls.
The problem is I can't figure out how to access the x, y coordinates of the list's item renderers.
my renderer contains a canvas in it, i add some title-window, every time i see my tree previously added Title-Windows are visible, i want to access each n every item in tree and remove previosly added all windows from the rendere. how access all the item renderer in AS3 ?
View 1 RepliesI have an mx:tree with with TreeItemRenderer as below.
Parent1 (Delete | Rename)
Child1
Child2
Parent2 (Delete | Rename)
Child3
Child4
Delete and Rename are link buttons
Now when i click Rename a popUp should be shown like
OldName : Parent1(Text Input showning present Name)
Enter New Name: Parent1NewName(Text Input for entering New name)
OK | CANCEL Buttons
Afetr Entering the new name,click OK,popup should be closed and need to get the value in the treeItemRenderer.
I have the logic to rename the Parent1 in TreeItemRenderer and also I m able to get the Parent1 in the popup OldName TextInput.But after entering the new name i m not able to get that new name in the TreeItemRenderer.
I use a spark List with a custom item renderer and an ArrayCollection for dataProvider.
The ItemRenderer looks something like
<mx:TextInput id="txtValue1" text="{data.myFirstValue}"/>
<mx:TextInput id="txtValue2" text="{data.mySecondValue}"/>
However, even though I change the text in txtValue1 or txtValue2, those are not actually changed in the object inside the ArrayCollection.
myFirstValue and mySecondValue are decorated with the [Bindable] tag.
My understanding is that if the text property is set to be bound a certain property, the changes should be automatically applied.
So the HACK (or so I think) that I use is to listen to the focusOut event of each textbox, and access the parent data provider and set the the values manually.
Is it a bad idea to inject data into an itemrenderer. The reason I ask this is because the state of each item is dependent on different changing data sources. So the original data is used to just display a new item, but there could be two to three other data collections that would be needed to determine the item's behavior. Is there a better way to do this? Should I be creating a custom DataGroup with the other data sources as properties on this custom container and then reference the data sources from the itemrenderer to the parent?
View 1 Repliesow do you display HTML formatted text in a Spark custom item renderer (Actionscript)?
Sample Code:
The html content in item.post_content displays as plain text in the IconItemRenderer messageFunction snippet below (which is just the default generated code for Icon Item renderer):
<s:itemRenderer>
<fx:Component>
<s:IconItemRenderer iconField="iconField"
iconWidth="64" iconHeight="64" labelField="post_title" messageFunction="getPost">
[code]...